package com.wy.util;

import org.springframework.security.authentication.encoding.Md5PasswordEncoder;

/**
 * Created by clei on 16/1/21.
 */
public class MD5Util {
    private static final String[] hexDigits = new String[]{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"};

    public MD5Util() {
    }

    public static String byteArrayToHexString(byte[] b) {
        StringBuffer resultSb = new StringBuffer();

        for(int i = 0; i < b.length; ++i) {
            resultSb.append(byteToHexString(b[i]));
        }

        return resultSb.toString();
    }

    private static String byteToHexString(byte b) {
        int n = b;
        if(b < 0) {
            n = 256 + b;
        }

        int d1 = n / 16;
        int d2 = n % 16;
        return hexDigits[d1] + hexDigits[d2];
    }

    public static String MD5Encode(String origin) {
        Object resultString = null;
        Md5PasswordEncoder md5 = new Md5PasswordEncoder();
        return md5.encodePassword(origin, "");
    }

    public static void main(String[] args) {
        System.out.println(MD5Encode("123"));
    }
}
